Dumping door for railway cars and the like



.March 19, 1929. A. CAMPBELL DUMPING DOOR FOR RAILWAY CARS AND THEl LIKE .I

.original Filed May 15, 1925 Caf in Openpo'sition.k

Patented Mar. 19, 1929.

g A. 1,705,804 Y UNITED SIAIESPATENI OFFITCI..` f i AneYLn 'CAMPBELL OF CHICAGO, ILLINOIs, AssIeNonTo ENTERPRISE RAILWAY EQUIPMENT COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS. f

.DUMIING DOOR Fon RAILWAY CARS lANI.) y'IIIE Linn.

original application inea May 15, 1925 serial N. 30,416, new rateneno .,1,eei5,`2l53, dated July 12, 1927.

Divided and this yapplication filed August 6, 1926. Serial No. 127,546.

Myv invention relates to improvements in dumping doors for railwaycars and the like.

This application isa division of my pending application 30,416, for improvements in dump cars, filed May 15, 1925, now Patent Number1,635,253, granted July 12,119.27.

An object of my invention is to lighten the Weighty of car doors by providing mea-nsv whereby the strength-giving qualities of embossments Or corrugationsy are continued be? yond the end of thesaid embossments 'by means of beam extensions. Y v

Another objecty of my invention vis to strengthen adoor formed of a metallic plate by embossments'so disposed as to permit of shovelling between the said embos'sments and permit the discharging' material-tov liow` read# il-yover said embossments when the doors are A further object ofmy invention is to rigidify the door plate .by embossments disposed abovethe plane ofthe door, and to further dispose and secure rigidifying orstiffening members onthe underside of the door in such relation tO theembossments that the door will be strengthened to resist longitudinal bending.

Other and further objects of the. invention will more. fully and clearly appear from ythe description and claims hereinafter following. In'thedrawings Fig. lisa plan view of' a door embodying my improved construction, Fig.` 2is front elevational viewfof the door shown in 1. FigQ3 isa vertical sectional View through rthe door, taken on a line corresponding substantially to the line 3 3 of Fig. 1, and Fig. 4 is a sectional view taken through the door on the line corresponding to line 4- 4 of Fig. 1.y f Y A,

The dumpingdoor is preferably formed of metalfas shown, having a series of rigidifying embossments' 20 in the form of corruga-Y tionsL or indentations, preferably pressed above the plane of the door plate, and extend ing from the hinged endlof the door towards the free .edge thereof, Vand ypreferably the margins of the door are downwardly flanged at the side edges as at 21+21and at the front and rear edges as indicated at 22 and23. Each door is adapted to be pivotally mounted at its rearedge by means of hinge-straps 24l on the door, which extend through the rear flange 23 thereof, each strap -24 being formed with a hinge yeye 25 through which a are'.

pivot pin isfada'ptedv to extend to 'connect' the nallyl extending reinforcing angle-shaped members 26'wl11ch extend towards the free edge ofthe door and connect with the upper' flange Ofia Z bar 27', wliichlextends from side' edge to side edge of the door as shown.

VSerial No. 30,416, filed May 15,1925, and' in-` dicated at 270, which are adapted to engagev the outer ends of` door beams A-A. Each of the beams A-A extends in vertical align-l ment with one of the Vcorrugations 20 in-v -wardly beneath thev door for an 'appreciable f distance, and terminates Yintermediate"the ends "of its corresponding corrugation. i Each. beam A is preferably formedvof ra U-shaped member having 'depending flanges 28-28,l

lying normal to the plane ofthe door, anda web portion` 29, which lies 'against ythe door plate and is securedthereto by'a. rivet 30 at the endof the adjacent corrugation. `Each beam A, and its' corresponding corrugation, a .,adapted to extend across the `vertical plane of' the Z-shaped inen'iber, 27and in order'to preserve continunity of reinforce-` yment for both the longitudinal and trans-4 versemembers, the U-'shap'ed portion of the member is flattened out where it passes across the' vertical plane of ltheZ-'bar 27, 'thereby presenting` awidened `portion On either side same withthe carstructure. The hinge straps `24 adjacent the side Vedges of the door are connected with the door and 4with longitudi-r ofthe corrugation" as''indicatedv at 31, said portion beingfadapted to receive rivets 32,

wherebyy connection is effected withthe door and also with the'Z-bar 27, said rivets being i I disposedon eithersidevof the adjacent cor,- rugation 20,` p

The Z-bar; 27, where it crosses the Hattened portionk 31 of thebeam A,-iscrimped as indicated' at 33 -33 The transitionzfro'm the-U- shape'd section to the l'laty plate section ofy each beani'isy effected withouty tearinggof the metal by means of a flare and-twisty of the liange as indicated at 34, said transition from the one section to the'other being effected witliin'the limits of thecorrugation. .Each

beamA extends across thev free edge of the door and curves downwardly and outwardly in the form o'fa reverse curve as lndlcated at 35, and thereafter extends outwardly in a substantially horizontal plane beyond the car side. The upper portion of the reverse curve of the beam A extends slightly beyond the free edge of the door and across the plane of the flange 22, which is flared outwardly adjacent each of` said beams as indicated at 36, to conform to the curvature of thel said beam, and a rivet 37 connects the said flared portion of the door flange with the curved portion of the beam A.

rThis arrangement of door bracing is particularly effective, as the lfull rigidi ying effect of the corrugationsis utilized and particularly so, because the Z-bar stiffener provides a strong reinforcement cross-wise of the corrugations7 which effectivelyserves to brace the corners of the door against downward bending7 and inasmuch as the hinge beams 26 are also connected to the Z-bar 2l' there is thus presented a continuous framework reinforcing the door adjacent the side and front margins thereof. rfhe body of the door within such frame work is reinforced by the embossments 20 with which the beams v AMA, for prolonging the rigidifying effect iiD of the embossments beyond the free edge of the door, cooperate to provide a door of ex- "eptional strength.

The embossinents 2O are preferably disposed in parallel relation and formed of truncated shape 4with flat tops 88 lioined to the main body ofthe plate by sloping connecting webs as indicated at 39 and 40. rl`he rear longitudinally extending connecting webs 39 of the various embossments are disposed at a lesser slope than the remaining webs thereby permitting material to readily flow above the enibossments when the door is in open position. rlhe various embossments 2O are separated by intervening flat floor sections 4i which are disposed in substantially the main plane of the door and are preferably formed of wider extent than the adjacent embossinents thereby forming relatively wide valleys having sufficient area to prevent the retention of material and moisture, and also permitting the securing of the underlying beam member 27 to the door plate by a plurality of rivets as inc'licated at 42. ln order to further strengthen each beam A and secure the same to the door beamV 27, connectingbraclets 43 may be utilized. Each bracket 48`is preferably in the form yof a U- shaped member secured to the [lat portion of beam A directly as 'at 44, and also to the depending flanges 28 as at lli- 45. it its inner end said bracket is flanged en either side thereof as indicated at 46-46 and has the flanges secured to the vertical flange of the Z-bar by means of rivets 47.

Adjacent its outer end7 one of the flanges 28 of each beam A is flared inwardly towards `the other flange for a short distance, presenting a curved ledge 48 disposed substantially in the plane of the door, andispreferably welded to the other flange as indicated at 49;, said ledge 48 being adapted to have suitable door supporting means seat thereunder.

While l have herein shown and described what l now consider the preferred manner of carrying out my inventionS the same is merely illustrative and l contemplate all changes` the free edge thereof; and a beam memberL K3 secured to the door, said beam member being disposed in the vertical plane, of the said corrugation, and adapted to effect continuity of the strengthening eect of said corrugation beyond the limits of the same.

2. ln a dump car, the combinationfwith a metallic car door having a plurality of corrugations extending from the hinged edge of the door towards the `free edge thereof; of additio'nal'beam members disposed in the vertical planes of said corrugations and adapted to continue the strength-giving qualities of the corrugationsrbeyond the free edge of the door. y j Y y 8. ln a dump car door, the combination with an embossment extending above the plane of the door; ofa member disposed in vertical alignment with the said embossment.r`

said member being` secured to the door on either side of the said embossment and extending beyond the vfree yedge of said door" 4. ln a dump car, the combination with a plurality of rigidifying corrugations formed integrally with the door, said corrugations terminating a short distance from an edge of the door; and extensions adapted to continue the strength-givin qualities of the-corrugations beyond said edge of the door, each of said extensions being disposed invertical 1 alignment witl'i a corrugation and secured to the door within the limits defined by the related ccrrugatiijin, and Vat each side thereof. 5; In a dump cardocr, the combination with a cerru'gation formed integrally in the door plate; of a beam member disposed in the vertical plane of the corrugation and adapted to provide a continuation of the strengtheningqualities of the corrugation beyond the of said corrugation.

6. In aL dump car door, the combination with a lll-shaped member secured 4tothe under side of the door and extendingv beyond an edge thereof, said. U-shaped member' having the flanges thereof disposed substantially normal to the plane ofthe door, one of said 7. In a dump car door, the combination with a series of embossments; of a beam ex.- tending cross-wise of the said embossments; means extending in prolongation of the embossments, said means extending across said beam and secured thereto, said means'including a beam member having a portion thereof yin the-'form of a flat plate securedA to the firsty yond the free edgeof the door.

named beam and to the door.

8. ln adump'car, the combination witha rigidifymg corrugation; of a beam member extending beyond the free edge of the door,

said beam member having a portion formed of U-shape and having another portion thereof formed of flat plate, said flat Vplate having portions thereof disposed on either side of the corrugation and thereby secured to the door.

9. In a dump car door, a corrugation eX- tending above the plane of tlie'door; a beam disposed below the -plane of the door, saidbeam being disposed in vertical alignment'k n with an embossmeiit extending above lthe with the corrugation and formed with a fiat section having portions disposed on either side of the said beam and secured to the door, said beam including a U-shaped portion projecting beyond the edge VVof the door, said U- shaped portion merging intovvthe flat plate .u

within the limits of the corrugation.

l0. In a dump car door, the combination with a reinforcing member secured to the underside of the door; of a series of embossmcnts extending across the reinforcing mem-v beiythe raised portion of each embossment iiicludinga flat section of extended area, said u raised embossments being separated from `cach other by intervening flatV oor sections lying in the plane oftliedoor, said last named flat floor sections being of greater area than thek raised flat` sections of saidl embossments.

ll. ln a dump car door adapted to behinged at'one end and supported at the opposite end, the combination with a metallic plate having a plurality of parallel embossinents formed therein to reinforce the plate intermediate the hinged and supported ends, said embossments being lformed with fiat tops joined to the main body of the plateby sloping webs, those webs extending between the hinged end ofthe door and the flat tops of the embossments being'formed of a fiatter slope than the remainingwebs, thereby CFI from each other by intervening flat iioor secv permittin o' discharging material to flow over the einbossnients when the door is in open position. j

l2. In a dump car door, the combination with a reinforcing member secured to the-underside of the door; of a series of embossments raised above the plane of the door and extending across the vertical plane ofsaid member, Vsaid embossments being separated tions vlying in the main plane of the door; i

securing meansy extending through the said intervening fiat floor sections and underlying reinforcing member; and extension eley ments secured to the under-surface of said door and to said reinforcing member in vertical alignmentwit-h certain of' said embossinents,said extension elements-projecting be- In a dump ycar door, the combination with a metallic plate having a vplurality of parallel reinforcing embossme'nts formed therein, said embossments being formedfwith fiat tops joined to the main body of the plate by sloping webs, said embossments Vbeing separated from each other byinteryening flat Hoor sections lying in theinain plane of the plate; and an underlyingreinforcing member extending across the various embossmeiits and secured to the said intervening flat floor seetionsl' sof '14. n a dump cardoor, the combination 1 'i plane of the door; of amember disposed in y vertical ali @'nnient `with the said embossment,

'said member being secured to the door; and

door supporting'means.co-operating with said member tomaintain the door in closed position. V

v '15. In a dump car, the combination with a metallic `cardoor having a plurality of corrugatio'ns extending from thehinged edge of the doors towards the free edge thereof;

lof additional beam members disposed in the vertical planes of said corrugations and adapted to continue the strength-giving qualbetween two opposite'edges of the door and additionalv combined supporting and beam lio extension'.elements secured tothe underside of said sheet metal body portion, each of said elements being arranged inline with one oi' said embossments and extending froma point inwardly of the corresponding end thereof to and beyond 'the adjacent edge of the door whereby to prolongtlie effective strengthening beam effect oit said embossments.V

'Y In witness that I claimthe foregoing I haveA hereunto subscribed my name this 17th day of July, 1926.

ARGYLE CAMPBELL. 

